Building construction



y 1951 c. c. DROEGER BUILDING CONSTRUCTION Filed Nov. 9, 1945 1N VENTOR. (19,91 6109056245;

1w 1 V1... 3 "cr m,

Patented May 1 5, 1951 UNITED STATES PATENT OFFICE BUILDING CONSTRUCTIONCarl C. Droeger, Greenfield, Ind.

Application November 9, 1945, Serial No. 627,672 3 Claims. (crimp-s)Acceptable sound proofing of rooms is attained by imposed soundabsorbent mats upon sound-reflecting surfaces and then covering thosesurfaces by perforated plates having more eye appeal than the soundabsorbent mats.

The object of my invention is to provide fireproof elements facilitatingthe placement of the aforesaid sound absorbent and covering elements.

The accompanying drawings illustrate my. invention.

Fig. 1 is a perspective view of an embodiment of my invention;

Fig. 2 is a fragmentary vertical section through one form of the metalfurring elements;

1 Fig. 3 is a horizontal section, on line 3-3, of Fig. 2;

Fig. 4 is a fragment perspective of the primary furring element shown inFigs. 2 and 3;

Fig. 5 is a fragmentary perspective of another form of the primaryfurring element; and

Fig. 6 is another view, similar to Figs. 4 and 5, of another form ofprimary furring.

In the drawings IE! indicates a partition or ceiling of fireproofmaterial to which are attached at intervals the metal furring primarystrips F by means of common anchor bolts II, P indicates strips of soundabsorbent pads laid between the furring, and S indicates secondaryfurring strips attached to the primary furring and to which the coversheets C are attached.

Each secondary furring strip S is formed of two parallel 2 strips l2 oflight sheet metal having oppositely directed free arms I3 and I4, and anintermediate strip of metal l5 presenting a great number of screwreceiving apertures and secured at its edges to the two facing arms l3,l3 of a pair of strips l2. Most conveniently, strip I 5 is ordinarywoven wire screening of comparatively light weight about 2 to 3 incheswide, welded or soldered at its edges to the two facing arms of the 2strips I2.

The primary furring is a metal channel of comparatively light weightsheet metal, the main body of which is provided at appropriate intervalswith means by which the secondary furring may be easily attached theretoin such manner as to be firmly held in place. This fastening means maybe any one of many forms cooperative with the free arms of the secondaryfurring so long as the parts I2 are firmly held laterally.

For instance, in Figs. 2 to 4, the main intermediate section of theprimary furring is slitted to form an abutment lip 20 against which theintermediate section of a strip 92 may rest, and a retaining lip 2|which may be folded down over the arm l3 of an associated strip I2 of asecondary furring S when placed on a vertical or primary furring F.

In Fig. 5 the abutment comprises merely an outwardly displaced sectionas at to engage the mid-section of the secondary furring. In Fig. 6 theside edges of lip 20 are folded outwardly and toward each other so thata U-shaped upper end 20 of the lip engages the mid-section of thesecondary furring and holds it against lateral displacement in onedirection, while the bent-down lip 21 holds it in the other direction.In each instance, of course, the lip 2| cooperates with its associatedstrip [2 in the manner illustrated in Figs. 1 and 2.

The side arms of the primary furring channels are perforated at variouspoints 25 to receive rods 26 which extend from one furring F to anadjacent one, so as to overlie and thus retain in position, the soundabsorbent pads P such pads being of such thickness that placement ofrods 26 locally compresses the pads. The rods 26 thus serve to holdvertically placed pads against vertical sagging under the force ofgravity or vibration.

After the secondary furrings have been placed, the cover sheets C, whichcommonly are perforated at many points 30, may be readily secured inplace by ordinary wood screws 3| passing through appropriateperforations 30 and taking into the reticulate element (ormultiperforate) portions of the secondary furrings. When ordinary wovenwire is used as an element of the secondary furring (as is preferable)the mesh of this wire should, of course, be smaller than the shanks ofthe screws 3| in order that the threads of the screws may establish athreaded engagement with the mesh.

Holding the Z strips of the secondary furring against lateraldisplacement toward each other is important because sagging of the wovenwire [5 is thereby prevented and proper alignment of the finishingsheets C is assured.

I claim as my invention:

1. The combination in a non-combustible wall or ceiling of a pluralityOf parallel, laterallyspaced, non-combustible primary furrings anchoredthereon, sound absorbent pads arranged between adjacent pairs of saidfurrings, a plurality of spaced, non-combustible secondary furringsextending transversely across the primary furrings and secured thereto,each of said secondary furrings comprising a portion lying in a planeparallel with the wall or ceiling and bridging between primary furringsand provided with a multiplicity of perforations adapted to threadedlyreceive threaded shanks of screws, a multiperforate finish sheetoverlying the aforesaid parts, and screws passing through said sheetsand having thread engagement with the perforate portions of secondaryfurrings.

2. The combination in a non-combustible Wall or ceiling of a pluralityof parallel, laterallyspaced, non-combustible primary furrings anchoredthereon, sound absorbent pads arranged between adjacent pairs of saidfurrings, aligned apertures formed in adjacent walls of each pair offurrings upon axes parallel with the plane of such wall or ceiling andspaced therefrorna dis tance less than the normal thickness of suchpads, a retaining member mounted in each associated pair of suchapertures, a plurality of noncornbustible secondary furrings extendingtransversely across certain of said primary furrings and spacedtherealong, bridging the same and secured thereto; each of saidsecondary furrings comprising a portion lying in a plane parallel withthe wall or ceiling and capable of receiving and retaining drivenfastening elements, a multiperforate finish sheet overlying theaforesaid parts, and fastening elements passing through said sheets anddriven into said last-named portions of secondary furrings.

3. The combination in a non-combustible wall or ceiling or a pluralityof parallel; laterallyspaced', non-combustible primar furrings anchoredthereon, sound absorbent pads arranged between adjacent pairs of saidfurrings, aligned apertures formed in adjacent walls of each pair offurrings upon axes parallel with the plane of such wall or ceiling andspaced therefrom a distance less than the normal thickness of such pads,a retaining member mounted in each associated pair of such apertures, a,plurality of non-combustible secondary furrings extending transverselyacross certain of said primary furrings and spaced therealong, bridgingthe same and secured thereto, each of said secondary furrings comprisinga portion lying in a plane parallel with the wall or ceiling andprovided with a multiplicity of perforations adapted to receive drivenfastening elements provided with transaxial projections, amultiperforate finish sheet overlying the aforesaid parts, and fasteningelements having transaxial projections passing through said sheets anddriven through the perforations of said secondary furrings.

CARL C. DROEGER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 7 1,027,641 Collins May 28, 19121,359,675 Davidson Nov. 23, 1920 1,845,693 Woiciechowski Feb. 16, 19321,968,045 Kotrbaty July 31, 1934 2,017,441 Kotrbaty Oct. 15, 19352,063,010 Balduf Dec. 8, 1936 2,077,713 Ross et a1 Apr. 20, 19372,160,794 Price May 30, 1939 2,242,834 Price May 20, 1941 2,278,822 Benz..1 Apr. 7, 1942 2,389,622 Hensel Nov. 27, 1945

